美国采购需求：粗蛭石、块状蛭石、植物用蛭石、细蛭石、块状粗蛭石、蛭石土

We are interested in placing an order for approximately 300,000 units of your preserved products. Before we proceed, we would appreciate it if you could provide us with detailed information on the specifications, available varieties, and pricing. Additionally, please include any lead times for production and shipping estimates so we can plan accordingly. Once we review the provided details, we can move forward with the order. Please send the necessary information as soon as possible so we can expedite the procurement process. Looking forward to your prompt response!